The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1988
Filed:
Apr. 28, 1986
Masayuki Aiga, Hyogo, JP;
Tetsuji Hashiguchi, Hyogo, JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
In an interaction space (7) defined between a cathode (2) and forward ends of vanes (3), an even direct-current magnetic field is applied by magnets (8) along the axial direction of the cathode (2). Direct-current or low-frequency high voltage is applied between the cathode (2) and the respective vanes (3). Spaces (6) surrounded by respective two adjacent vanes (3) and the inner wall of the anode cylinder (4) define cavity resonators, which generate high-frequency electric fields concentrated to the forward end portions of the respective vanes (3) and partially leaking in the interaction space (7). Under such conditions, an electron group emitted from the cathode (2) rotates about the cathode (2) in the interaction space, whereby interaction takes place between the electron group and the high-frequency electric fields to oscillate microwaves. At this time, undesired higher harmonics generated with the microwaves of basic frequency are suppressed by arranging inner strap rings (5a) in positions separated from the forward ends of the vanes (3) to exceed a prescribed interval.